[1]范 蒙,张贵锋,柴东郎,等.镁锂超轻合金搅拌摩擦焊及其机制的研究[J].焊管,2019,42(11):25-30.[doi:10.19291/j.cnki.1001-3938.2019.11.005]
 FAN Meng,ZHANG Guifeng,CHAI Donglang,et al.Study on Friction Stir Welding of Mg-Li Ultra-light Alloy and Its Mechanism[J].,2019,42(11):25-30.[doi:10.19291/j.cnki.1001-3938.2019.11.005]
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镁锂超轻合金搅拌摩擦焊及其机制的研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第11期
页码:
25-30
栏目:
试验与研究
出版日期:
2019-11-28

文章信息/Info

Title:
Study on Friction Stir Welding of Mg-Li Ultra-light Alloy and Its Mechanism
文章编号:
10.19291/j.cnki.1001-3938.2019.11.005
作者:
范 蒙张贵锋柴东郎王士元
西安交通大学 金属材料强度国家重点实验室 焊接研究所, 西安 710049
Author(s):
FAN Meng ZHANG Guifeng CHAI Donglang WANG Shiyuan
State Key Laboratory for Mechanical Behavior of Materials, Institute of Welding Research,
Xi’an Jiaotong University, Xi’an 710049, China
关键词:
焊接镁锂合金搅拌摩擦焊过饱和固溶析出相
Keywords:
welding Mg-Li alloy friction stir welding supersaturated solid solution precipitates
分类号:
TG453.9
DOI:
10.19291/j.cnki.1001-3938.2019.11.005
文献标志码:
A
摘要:
镁锂(Mg-Li)超轻合金作为一种新型超轻合金在国防军工及民生方面应用广泛。研究了国产双相Mg-Li合金LA103Z在搅拌摩擦焊后的力学性能、微观组织及显微硬度,并对其微观机理进行了分析。结果表明,Mg-Li超轻合金对搅拌摩擦焊呈现优良的可焊性,搅拌区未发现非致密性缺陷与裂纹,得益于其优良的塑性变形能力;搅拌区的强度与显微硬度均远高于母材,得益于其粗大α相的机械破碎及随后发生的破碎后α相碎屑的过饱和固溶。
Abstract:
As a new type of ultra-light alloy, Mg-Li alloy is widely used in national defense and people’s livelihood. The mechanical properties, microstructure and microhardness of domestic biphase Mg-Li alloy LA103Z after friction stir welding were studied. The results showed that Mg-Li ultra-light alloy presented excellent weldability for friction stir welding, and no non-compact defects or cracks can’t be found in the mixing zone, this is due to its excellent plastic deformation ability; the strength and microhardness of the stirring zone were much higher than that of the base material, which is due to the mechanical breaking of the coarse α phase and the subsequent supersaturated solid solution of the crushed α phase debris.

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备注/Memo

备注/Memo:

收稿日期:2018-12-24
修改稿收稿日期:2019-09-18

基金项目: 西安交通大学“材料表面技术创新团队”资助项目(项目编号xtr0118008)。
作者简介:范 蒙(1995—),男,硕士研究生,主要从事搅拌摩擦焊与搅拌摩擦钎焊新方法研究。

更新日期/Last Update: 2019-12-25